Apparatus for drying milk.



J. DJIVIOINTYRB. AARATUS FOR DRYING MILK. f 1 wATIoN TILED AUG.1,1913.

1,122,142. Patented Dee. 1914.

2 SHEETS-SHEET 1.

tL n. MGINTYRE, PPRATUS FOR DRYING MILK. APPIUATION FILED AUG. 1, 1MB` 1 1 22, 1 42. Patente@ me. 22, 1914.

2 SHEETS-'SHEET 2.

BVM

ATTORNEYS om concern;

Be ii iowii lha* l, o: oiizeii of #fue Uniteel States, and a residem oi the city of New York, borough of Brooklyn, in the '-ouiity o' Kings enfl of ew Ylfoil, have iiieiied new and useful improvements in Apparatus for Drying Milli, ol" which. the following is o full, olenr, and exact flescripzion.

g -The invention -relazes to the method and -9 continually romling the agitator, first lite high ol' Speed until the mille nears a,

iliiol or doughy Consistency, and then romt- .ig the agitator Willi a decreased rote of speed and e correspon (ling increase in power 5 during the next period of Changing the milk ironie, Cloughy consiseiicy to granular ferm.

vin order to accomplish t flesirorl result use is merle of o driving gear connected with the i-ior shaft to rol-aie the agit-aim Continua :at e high raie ol speed during the period of changing the milk to :i doug-hy Misenoy, and to rotaie the Said. agitator at a. decreased spec-cl and i corresponding increase oi power (hiring the period of che "ing the mill: liroiii :i rlo'ugliy eoiieie'i enoy into granular form.

A. preotizil eiiibocliiiif- L- oi the. invention is repreeeuted in nocommnying drawings forming par* ol: this specification, in which similar characters of reference holieoiio corresponding parte in all ihrs.

Figure l is n plan View of the apparatus lfor drying mill; provide-l with the improvemens; l* ,o 2 is a eifle elevation of lhe 5eme.; Fig. 3 is lui enlarged sectional side elevation of' the Worm :mal worm ehnftgfiih Jalle Worm out of engogeizioni; ,Yilh the Worin o Wheel;

tion of "che vessel, air induction port nel Chamber 'jor supplying heeled ein lo manufacturing dry mill; on :i commercial scale hy he methoil and apparatus shown desoribefl elle Letters gotent ily or New Yom@ fie oiioeeo, im

loew D. MCNTYRE,

and Fig. l is a Sectional side eleva# ERYING- moore iejerrecl hoe been loon-fl mm s ail-il hell.- ooiiiioii Wih ehe egilei'or Sheila loi meeting lle Cater during the flo-ii hy o aiion are Wholly mite, "f

'l his ie o1 he lect that iii ionizing; lry mill; on

coinnioelae 0' mme, and ooi meer is needed t :imi when me milk reaches e f ry eiicy lio iur-.55 becomes Lemmi :mil filiere so mmh i'esifstziiiee io (lr einoioyeil lor ioiolixig th@ the i; 'y r 8 "Zlio eo rolale :mil lill; becomes spoiled :and Couieoibion hei' and 1he agit-eier slime o etnie the o'iernioii, lhe lx., ou he Qulleys nifl 4he ugimlor lute or the spokes or hinchas of are broken oil miel ille Capable of performing iis proper limi@ on. t in 'making dry mill: f 'li in the pulente Y we lhiit he 1i, is understood ho under the process ser loro above mentions@ it is iiiipeszi iiiil-l loes iio heooiiie dormo length ol lime :as ilornmiieg or lilln len minutes oi iii mul ille imil'oflue u. ii wel sur eiirl hulle the milk with {Lhe euh that the whole unich is spoiled. "lliixe il: is; new tlioffv the milk l-:ept agita?. xl

Lion Al'or :my grezi lengh of time ir ii-@ler pre ee oeillet dry ii in o preis sliou high rate. of Speed during the earl i 'iig heated :air under pressure into llio milk contained iii 'the vessel or tniil; more fully described in the paient-,s ebow reiorrel and counter-shaft D respectively.

' for the worm H to abut against and the' 'to so that further description of the same is not deemed necessary.

ln the bottom portion of the vessel A is mounted 'to' turn an agitator, breaker or stirrer B having its shaft .B journaled in suitable bearings in the ends of the vessel A, and on the outer end of the shaft i3 is secured aV pulley C connected by a belt C with a pulley C* loose on a counter-shaft D driven by pulleys E, E and a belt E2 from the shaft ii" of an engine l" or other motor. @n the outer end of the shaft B is secured a worm 1wheel G in mesh with a wonm H mrunted to rotate with and to slide on a longitudinallyextending Worm shaft H journaled in suitable bearings and provided with a pulley I connected by a belt I withv turn with the same and to slide thereon' in the directionof the axis of the shaft by the `use of a key and key-way on the clutch L is. Shifting lever N is connected with the clutch L to shift the same lengthwise on the countershaft D with a view to move the clutch L into engagement with either clutch member J or K. The Worm H is connected bykey and key-way with the worm shaft H to allow the worm H to slide lengthwise on the worm shaft H with a view to be out of mesh with the worm wheel G during the time the agitator' B is driven at a high speed by way of the belt C and pulley C, as hereinafter more fully described. When the agitator B is to be rotated at a low'speed and with an increase of power then the operator by giving a few turns to the worm shaft H and pushing the Worm to the right causes the latter to move back into engagement with the wormlwheel'G to allow of driving the agitator B by means 'of the worm H and worm Wheel G. The worm shaft H is provided with a thrust collar H2 worm shaft is provided with a removable pin H3 adapted' to be slipped in place after the worm has moved into mesh with the worm wheel G. This pin H3 is removed to allow the worm to move out of mesh with the worm wheel G (see Figs.. 2 and 3).

The operation is as follows: The milk is poured into the vessel A while the air blast is turned on and the' agitator' B isrotated from the counter-shaft D by means of the pulley C2, belt C', pulley C and clutch L now in engagement with the clutch member J. By the arrangementdescribed the agitator B is rotated at a high rate of speed so that the milk and the entering hot air are agitated to insure a very intimate com- 'temperature of 216 F. and this is maintained during about three-fifths of the whole tune required for obtaining the product, and

during the lirst two periods of the process the milk is first concentrated to a thick milk consistency and subsequently to a doughy consistency. At'about the time the milk nears a doughy consistency the operator shifts the ylever N so as to move the clutch L out of engagement with the clutch member J. The 4worm H is now engaged with the worm wheel G, as previously described, and then the clutch L is shifted farther and into engagement with the clutch member 'K so that the shaft B and the agitator .B are now rotated at a low rate of speed and with a correspondingly increased power by means of the worm H and worm wheel G. During the period of reducing the milk to a doughy consistency the air isv introduced at a temperature of about 190 F. and the period lasts about onefifth of the whole time of the process. lt will be noticed that as `the temperature of the air is reduced a corresponding reduction in the speed of the agitator B can be hadwithout danger of baking the milk especially as the milk is kept constantly agitatedgand no particle thereof is liable to become dormant. From the doughy state of the milk until the latter erumbles the temperature of the heated air is kept at 190 and the state of crumbling is reached in about vone-tenth of the time of the whole process. crumbled the clutch L is moved out of mesh xwith vthe clutch member K .and back 'into mesh with'the clutch member J to again drive the agitator B at a high rate of speed to stir the crumbled milk into granules and powder and to dry the same in order to render the dry granules fit for grinding into powder form. During this stage the heated air is passed into the milk at 170 F., and this last stage of the process takes about one-tenth of the time of the whole process. At the end of the last period of the process the air is shut 4o and the agitator B is stopped by shifting the clutch L from the active position into intermediate position -to allow removing the product from the vessel, the product being now in condition for grinding.

From the foregoing it will be seen that by the arrangement described the driving gear rotates the agitator B continually at alhigh rate of speed durinff ,the period of changing the milk to a .douihy consistency and rotates the agitator at a decreased speed and a corresponding increase in power during the period of changing the milk from a doughy consistency to granular form.

It isunderstood that the change in speed .is quickly made so that the rotation of the After the milk has Lib the said pstve drive at a eeasd speed al1-' a cozrepoaing increase powe duf ing tige peod el changing the from a don-hy cnsenoy im@ gamlm arm,

h1 an apparatus for drying h@ combnal. of a vessel fr cantang mill; amd having a se n the Lytma hm, am supgly cnnecef'? nih tha sam; Skt, a

two subscribing Witness@ .f

GEN Mcb @E sses 2 V `1 Y 2.20. (I. ROSTER,

52mm? D. ROLLEAUS, 

